how to get the caller's filename, method name in python

Question

for example, a.boo method calls b.foo method. In b.foo method, how can I get a\'s file name (I don\'t want to pass __file__

Answer 1

This can be done with the inspect module, specifically inspect.stack:

import inspect
import os.path

def get_caller_filepath():
    # get the caller's stack frame and extract its file path
    frame_info = inspect.stack()[1]
    filepath = frame_info[1]  # in python 3.5+, you can use frame_info.filename
    del frame_info  # drop the reference to the stack frame to avoid reference cycles

    # make the path absolute (optional)
    filepath = os.path.abspath(filepath)
    return filepath

Demonstration:

import b

print(b.get_caller_filepath())
# output: D:\Users\Aran-Fey\a.py

Answer 2

Reading all these solutions, it seems like this works as well?

import inspect
print inspect.stack()[1][1]

The second item in the frame already is the file name of the caller, or is this not robust?

Answer 3

You can use the inspect module to achieve this:

frame = inspect.stack()[1]
module = inspect.getmodule(frame[0])
filename = module.__file__

Answer 4

Python 3.5+

Caller's Filename

To retrieve just the caller's filename with no path at the beginning or extension at the end, use:

import inspect
import os

# First get the full filename (including path and file extension)
caller_frame = inspect.stack()[1]
caller_filename = caller_frame.filename

# Now get rid of the directory and extension
filename = os.path.splitext(os.path.basename(caller_filename))[0]

# Output
print(f"Caller Filename: {caller_filename}")
print(f"Filename: {filename}")

Sources:

• inspect.stack()
• os.path.basename()
• os.path.splitext()

Answer 5

Inspired by ThiefMaster's answer but works also if inspect.getmodule() returns None:

frame = inspect.stack()[1]
filename = frame[0].f_code.co_filename

Answer 6

you can use the traceback module:

import traceback

and you can print the back trace like this:

print traceback.format_stack()

I haven't used this in years, but this should be enough to get you started.